A prefix operator is an operator that is applied to the variable, constant, function, or parenthetic expression that immediately follows it. The plus sign (+) and minus sign (-) can be used as prefix ...

operand something to be operated on. An operand can be a variable, a SAS function, or a constant. See Specifying an Operand. operator a symbol that requests a comparison, logical operation, or ...

We can use two functions to add a prefix to multiple (or all) entries across a column. The first one is using the & operator, and the second is using the CONCATENATE function. Eg. We are creating the ...